Implement BlogPosts#index.

Current spec status: 977 examples, 0 failures in 6.3 seconds.
Implement BlogPost#index view.
Implement BlogPosts#new.

Current spec status: 994 examples, 0 failures in 6.56 seconds.
Implement BlogPosts#create.

Current spec status: 1012 examples, 0 failures in 6.99 seconds.
Implement BlogRouter.

Current spec status: 1024 examples, 0 failures in 6.99 seconds.